Slitting means



July 10, 1923. 1 1,461,266

J. A. CAMERON ET AL SLITTING MEANS Original Filed June 9, 1920 j 2 Sheets-Sheet 2 WWW/W Patented July 10, 1923.

UNITED STATES PATNT FFlCE.

JAMES A. CAMERON AND GUSTAF IBIRGER BIRCH, OF BROOKLYN, NEW YORK, AS- SIGNOB TO CAMERON MACHINE COMPANY, OF BROOKLYN, NEW YORK, A COR- smrrme means.

Application filed June 9, 1920, Serial No. 387,620. Renewed December 9, 1922. Serial No. 490,727.

I '0 all who mitt may concern:

Be it known that we, J AMES A. CAMERON and GUSTAE B. BIRCH, citizens of the United States, and residents of the borough of Brooklyn in the city of New York and State of New Ybrk, have invented certain new and useful Improvements in Slitting Means, of which the following is a specification.

This invention relates generally to slitting means and more especially to the type in which overlapping and laterally engaging shearing members are employed, this application being a division of that filed October 1st, 1918, Ser. No. 256,447.

The main object and feature of the invention is the provision of suitable means for rendering the parts accessible in a construction in which both shearing members are positively driven.

In the accompanying drawings, a concrete form of a preferred embodiment of the in-.

vention is shown, but it is to be understood that changes and modifications may be made without departing from the spirit and scope of the invention: I

Fig. is an end elevation of slitting means embodying the invention:

Fig. 2 is a view lookin in the direction of the arrow 2 of Fig. 1, s owing one of the cutters in section:

Fig. 3 is a detail view of a modified form of slitters partly in section:

The specific machine shown includes two main end frames 5 mounted on a suitable base and rigidly held in respect to each other. The web of paper 6 to be slitted is shown as passing over guiding rollers 7 and 8 mounted in the end frames, roller 8 being a rewinding drum which with rewinding drum 4, acts as a surface rewinding device for the coils 60 and also acts to 'draw the.

web through the shears at a constant speed.

The means for slitting the paper comprises slitting members 19 and 20 in the form of overlapping rotating shear-cutters arranged in sets, one member of each set being carried by arotating shaft so that both slitting members are positively driven. Cutters 19 are mounted on rotatable shaft 46 carried by arms 47 on a rocking support 3 while cutters 20 are carried b a rotatable shaft 48 mounted in the end rames. In effect, therefore, said cutter members are arranged in two groups, one member of each set being in one This slide moves in guides 23 and is actuated by means of threaded stem 24 rotatin idly in the slide being prevented from lengt wise displacement therein by means of collar 25 and shoulder 26, the stem bein in threaded engagement with a bushing 2 carried-by guides 23. Check nuts 28 limit the movement in one direction so that slide 22 can always be returned to the same position. The other end of rocking support 3 slides in bearing 23.

Means are provided for rocking the support to move member 19 edgewise in unison. A crank arm 13,0arried by rocking support 3, is, at its outer end, internally threaded at right-an les to the axis of the rocking support. xtending through the internally threaded portion of'the crank arm is an externally threaded member 14 rotatable by means of a handle 15. The unthreaded end 30 of member 14 is tiltably supported in bearing 31, which has a shank 32 freely rotatable'in an extension 29 carried by slide 22. In this manner, when stem 14 is rotated, bearing 31 will prevent lengthwise displacement of the stem while allowing-idle rotation and tilting and, therefore, crank arm 13 will be moved, carrying with it rocking support 3'.

Cutters 19 and 20 are driven by the following means: Shaft 48 of cutters 20 is driven by ulley 45 and carries a sprocket 49 from whic h a chain 50 extends to sprocket 51 on rocking support 3 on which is a spur ion overlapping shears engage can be varied independently of that of any other set, and after members 19 are moved sidewise in unison to separate 19 and 20, they may be restored to their original position and tensional relation, as will be understood. In Fig. 3, cutter 19 is devoid of springs and is merely secured by a bolt 59 to shaft 46.

We claim:

1. slitting means comprising a plurality of sets of rotatable overlapping shearing members arranged in two opposed groups, the members of each set engaging laterally with each other, means for positively driving both members of each set, means for moving the members of one group laterally and in unison with respect to the other group, and means for moving the members of the same group edgewise and in unison toseparate the members of opposed groups.

2. Slitting means comprising a plurality of sets of rotatable overlapping shearing members arranged in two opposed groups, the members of each set engaging laterally with each other, means for positively driving both members of each set, means for varying, regardless of the members of any other set, the lateral relation between the members of each set, means for moving the members of one group laterally and in unison with regard to the other group, and means for moving the members of the same group edgewise and in unison to separate the members of opposed groups.

3. Slitting means comprising a plurality of sets of rotatable overlapping shearing members arranged in two opposed groups, the members of each set engaging laterally with each other under tension, means for positively driving both members of each set, means for varying regardless of the members of any other set, the amount of tension with which the members of each set shall engage laterally, means for moving the members of one group laterally and in unison with regard to the other group, and means for moving the members of the same group edgewise and in unison to separate the members of opposed groups.

4. Slitting means comprising opposed slitting members, rotatable shafts carrying said slitting members, a rocking support carrying one of said shafts, means for rocking said support, a driven member on said rocking support, means for driving the shaft car- .ried by the rocking support from the driven member on the latter, and means for driving the other shaft.

5. Slitting means comprising: opposed slitting members, rotatable shafts carrying said slitting members, a rocking support carrying one of said shafts, means for rocking said support, a driven member on said rocking support, means for driving the shaft carried by the rocking support from the driven member on the latter, means for driving the other shaft, and means for adjusting the rocking support lengthwise of its axis.

6. Slitting means comprising: opposed slitting members, rotatable shafts carrying said slitting members, a rocking support carrying one of said shafts, means for rocking said support, a driven member on said rocking support, means for driving the shaft carried by the rocking support ,from the driven member on the latter, means for driving the other shaft, and flexible transmission means between said other shaft and said rocking support.

Slitting means comprising: opposed slitting members, rotatable shafts carrying said slitting members, a rocking support carrying one of said shafts, means for rocking said support, a driven member on said rocking support, means for driving the shaft carried by the rocking support from the driven member on the latter, means for driving the other shaft, and flexible transmission means between said other shaft and said rocking support, and means for adusting the rocking support lengthwise of its axis.

8. Slitting means comprising: opposed sl tting members, rotatable shafts carrying said slitting members, a rocking support carrying one of said shafts, means for rocking said support, a driven member on said rock ng support, means for driving the shaft carried by the rocking support from the driven member on the latter, means for driving the other shaft, flexible transmission means between said other shaft and said rocking support, slitting means consisting of two opposed groups of slitting members arranged on said shafts in complementary overlap ing sets.

9. Slitting means comprising: opposed sl tting members, rotatable shafts carrying said slitting members, a rocking support carrying one ofsaid shafts, means for rocking said support, a driven member on said rock ng support, means for driving the shaft carried by the rocking support from the driven member on the latter, means for driving the other shaft, flexible transmission means between said other shaft and said rocking support, slitting means consisting of two opposed groups of slitting members arranged on said shafts in complementary overlapping sets, and means for moving the rocking support lengthwise of its axis.

10. Slitting means comprising: opposed slitting members, rotatable shafts carrying said slitting members, a rocking support carrying one of said shafts, means for rocking said support, a driven member on said rocking support, means for driving the shaft carried by the rocking support from the driven member on the latter, means for driving the other shaft, flexible transmi sion means between said other shaft and said rocking support, slitting means consisting of two opposed roups of slitting members arranged on said shafts in complementary overlapping sets, a crank arm carried by the rocking support internally threaded at right-angles to the axis of the latter, a threaded member in engagement with the threaded portion of the crank arm, and a bearing tiltably supporting the threaded member and with which the latter has idle rotatable engagement to thereby admit of rocking the crank arm and threaded memher when the latter is rotated.

11. Slitting means comprising: opposed slitting members, rotatable shafts carrying said slitting members, a rocking support carrying one of said shafts, means for rocking said support, a driven member on said rocking support with its axis in alinement with the axis of said rocking support, means for driving the shaft carriedby the rocking support from the driven member on the latter and means for driving the other shaft.

12. Slitting means comprising: opposed slitting members, rotatable shafts carrying said slitting members, a rocking member mounted for axial adjustment carrying one of said shafts, means for rocking said rocking' member, a driven member on said rocking member, means for driving the shaft carried by the rocking member from the driven member on the latter, means for driving the other shaft, and means for adjusting the rocking member lengthwise of its axis.

Signed at the borough of Brooklyn, in

the county of Kings, city and State of New York, this 5th day. of June, 1920. 

